EP0620656B1 - Emetteur-récepteur pour haute-fréquences - Google Patents

Emetteur-récepteur pour haute-fréquences Download PDF

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Publication number
EP0620656B1
EP0620656B1 EP94104893A EP94104893A EP0620656B1 EP 0620656 B1 EP0620656 B1 EP 0620656B1 EP 94104893 A EP94104893 A EP 94104893A EP 94104893 A EP94104893 A EP 94104893A EP 0620656 B1 EP0620656 B1 EP 0620656B1
Authority
EP
European Patent Office
Prior art keywords
intermediate frequency
oscillator
switched
frequency oscillator
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94104893A
Other languages
German (de)
English (en)
Other versions
EP0620656A2 (fr
EP0620656A3 (fr
Inventor
Josef Dipl.-Ing. Fenk
Helmut Dipl.-Ing. Herrmann
Peter Ing. Grad. Sehrig
Werner Dipl.-Ing. Veit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0620656A2 publication Critical patent/EP0620656A2/fr
Publication of EP0620656A3 publication Critical patent/EP0620656A3/fr
Application granted granted Critical
Publication of EP0620656B1 publication Critical patent/EP0620656B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • the invention relates to a transmitter / receiver arrangement for higher frequencies, especially for applications in the mobile radio sector.
  • a digital one is known from the prior art EP 0 529 767 A1 Transmitting / receiving device known.
  • the receiver includes one first frequency converter for generating a first intermediate frequency and a downstream quadrature demodulator.
  • the transmitter includes a quadrature modulator for generation a quadrature-modulated second intermediate frequency signal and a second one downstream of the quadrature modulator Frequency converter that generates the transmission signal.
  • the frequency difference between the first and the second intermediate frequency is in relation to the frequency interval between the transmission frequency and receive frequency set.
  • the frequency of one of the Both intermediate frequency signals will be an integer A multiple of the frequency of the other intermediate frequency signal set.
  • the object of the invention is therefore an integrable transmitter / receiver arrangement for higher frequencies indicate the is suitable for various circuit concepts.
  • the task is solved by a transmitter / receiver arrangement with a reception branch mixer, which receives a signal and a carrier frequency signal multiplied by one controlled first controlled by a switching control signal Intermediate frequency oscillator, the frequency range of which by first range control signal is switchable, with a Receive branch mixer downstream demodulator, which also the output signal of the first intermediate frequency oscillator is fed directly and 90 ° out of phase and the emits an output signal, With a parallel to the first intermediate frequency oscillator, controlled second intermediate frequency oscillator, the can be switched on by the switching control signal, with one of the first and second Downstream intermediate frequency oscillator and this controlling phase detector device, whose frequency range can be switched by a second range control signal, with a Transmitter mixer, one input with the outputs connected by the first and second intermediate frequency oscillator and at its other input is the carrier frequency signal is created, and downstream of the transmission branch mixer Modulator, which also receives an input signal and which emits a transmission signal.
  • a reception branch mixer which receives a signal and
  • the arrangement according to the invention offers the user numerous Customization options, preferably the following three Operating modes or circuit concepts can be selected.
  • a first operating mode provides that the first intermediate frequency oscillator turned on and the second intermediate frequency oscillator is turned off and that the first intermediate frequency oscillator and the phase detection device in the same frequency range are switched.
  • a second mode of operation is also the first intermediate frequency oscillator turned on and the second intermediate frequency oscillator switched off.
  • the first intermediate frequency oscillator and the phase detection device switched between different frequency ranges.
  • First and second intermediate frequency oscillators have different frequency ranges, whereby the phase detection device in the transmission mode on the frequency range of the second intermediate frequency oscillator and in Receive operation on the frequency range of the first intermediate frequency oscillator is switched.
  • the phase detection device through a phase detector with upstream Given frequency divider, whose divider ratio over the second range control signal is switchable.
  • the carrier frequency signal is generated by a controllable oscillator.
  • the transmitter / receiver arrangement according to FIG. 1 contains a receive branch mixer 1, a receive signal 2 and a Carrier frequency signal 3 are supplied.
  • the receiving branch mixer 1 forms the product of the received signal 2 and the carrier frequency signal 3 and passes this to a demodulation unit 4 further, which also the output signal of a controllable oscillator 5 directly and out of phase by 90 ° is supplied and which outputs an output signal 17.
  • the Phase shift is in the embodiment shown generated by means of a phase shifter 6. So phase shifted Signals can, for example, in the same way also generated by the controllable oscillator 5 itself become.
  • the frequency of the oscillator 5 is determined by a phase detector 7 controlled within a certain frequency range. This frequency range can be determined by a range control signal 8 can be changed.
  • the oscillator 5 is a switching control signal 9 can be switched off.
  • a range control signal 10 is also the frequency range of the phase detection device 7, the input with the output of the oscillator 5 is connected, switchable.
  • the oscillator 5 is a controlled oscillator 11 connected in parallel, the can be switched on by the switching control signal 9. There always only one of the two oscillators 5 and 11 be in operation is between the corresponding inputs for the Switching control signal 9 an inverter 12 switched.
  • the exits of the oscillators 5 and 11 are on an input one Transmitter mixer 13 performed by the carrier frequency signal 3 is controlled. After all, that is Transmitter mixer downstream of a modulator 14 to the an input signal 15 is additionally applied for modulation and which emits a transmission signal 16.
  • the arrangement shown can be fully or partially integrated, including a division advantageous on two separate integrated circuits is. The user is able to use several different ones Allows circuit concepts, three of which preferred circuit principles (operating modes) become. In the operating modes shown below each assumed an application in which the transmission signal in the range between 880 and 915 MHz and the received signal is in the range between 925 and 960 MHz. Furthermore a phase shifter is used, the phase-shifted to each other Output signals half the frequency of the input signal exhibit.
  • phase detection unit also exists 7 from a phase detector operating at a fixed frequency PD ', the one divider with switchable divider ratio is connected upstream. Eventually the carrier frequency signal 3 by a controlled carrier frequency oscillator 20 generated.
  • an oscillator 20 In this operating mode, an oscillator 20 is used requires a large tuning range from 1126 to 1206 MHz, however only one of the two oscillators 5 and 11 is in operation, which results in lower power consumption.
  • the oscillator 5 and the phase detection unit 7 are between two frequency ranges, for example between the fixed frequencies 400 MHz and 492 MHz, switched according to transmission and reception mode.
  • the circuit structure corresponds essentially to that according to FIG 2. In contrast, however, the oscillator 5 and the phase detection unit 7 between the above Areas switched.
  • the carrier frequency oscillator advantageously works at low vibration frequency and over a small one Tuning range from 679 to 715 MHz. Even in this mode are just two oscillators, namely the oscillator 5 and the oscillator 20, in operation. The electricity consumption is also low.
  • the oscillator In the operating mode according to FIG. 4, the oscillator is in transmission mode 11 turned on and the oscillator 5 turned off. Conversely, the oscillator 11 is switched off in the receiving mode and the oscillator 5 turned on.
  • the oscillators 5 and 11 work in different frequency ranges.
  • the oscillator 11 works in Transmission mode at 400 MHz and the oscillator 5 in the reception mode at 492 MHz.
  • the phase detection unit 7 works therefore in transmission mode on the frequency of the oscillator 11, So at about 400 MHz and when receiving frequency of the oscillator 5, that is at about 492 MHz. Switching the phase detection unit 7 and the switching on and off the oscillators 5 and 11 are carried out with the control signals 10 and 9.
  • the carrier frequency oscillator 20 in turn operates here at low vibration frequency in the range between 679 and 715 MHz and has a small tuning range. There oscillators 5 and 11 are switched on alternately, So only one of the two is always in operation achieved a lower power consumption.
  • the modulator 14, the transmission branch mixer 13, are preferred. possibly the divider 18, the controlled oscillator 11, the phase detection unit 7 and possibly the carrier frequency oscillator 20 integrated in a circuit while the receiving branch mixer 1, the demodulator 4, the controlled oscillator 5 and possibly the phase shifter 6 are in another Integrated circuit.
  • controlled Oscillator provided, which alternatively in place of switchable oscillator can be used. All controlled oscillators are designed so that they optionally with the help of external passive components as oscillators or as an input buffer for signals from external Oscillators are generated, operated.
  • the arrangement according to the invention offers that Users the advantage of a highly flexible system architecture. This does not have to be based on a concept from the start but can set the pros and cons of different Weigh concepts for yourself and then individually decide.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Superheterodyne Receivers (AREA)

Claims (6)

  1. Dispositif émetteur récepteur comportant un mélangeur de branche réceptrice (1) qui multiplie un signal de réception (2) par un signal de fréquence porteuse (3), un premier oscillateur à fréquence intermédiaire (5) qui est commandé et interruptible par un signal de commande de commutation (9) et dont le domaine fréquentiel peut être commuté par un premier signal de commande de domaine (8), un démodulateur qui est branché du côté aval du mélangeur de branche réceptrice (1), qui reçoit en plus le signal de sortie du premier oscillateur à fréquence intermédiaire (5) directement ainsi que déphasé de 90° et qui fournit un signal de sortie (17), un deuxième oscillateur à fréquence intermédiaire (11) commandé qui est branché en parallèle avec le premier oscillateur à fréquence intermédiaire (5) et qui peut être connecté par le signal de commande de commutation (9), un dispositif détecteur de phase (7) qui est branché du côté aval du premier (5) et du deuxième (11) oscillateur à fréquence intermédiaire, qui commande ceux-ci et dont le domaine fréquentiel peut être commuté par un deuxième signal de commande de domaine (10), un mélangeur de branche émettrice (13) dont une entrée est reliée aux sorties du premier (5) et du deuxième (11) oscillateur à fréquence intermédiaire et dont l'autre entrée reçoit le signal de fréquence porteuse (3), et un modulateur (14) qui est branché du côté aval du mélangeur de branche émettrice (13), qui reçoit en plus un signal d'entrée (15) et qui fournit un signal d'émission (16).
  2. Dispositif selon la revendication 1,
       caractérisé par le fait que le premier oscillateur à fréquence intermédiaire (5) est connecté et le deuxième oscillateur à fréquence intermédiaire (11) est arrêté et que le premier oscillateur à fréquence intermédiaire (5) et le dispositif détecteur de phase (7) sont commutés sur le même domaine fréquentiel.
  3. Dispositif selon la revendication 1,
       caractérisé par le fait que le premier oscillateur à fréquence intermédiaire (5) est connecté et que le premier oscillateur à fréquence intermédiaire (5) et le dispositif détecteur de phase (7) sont commutés entre deux domaines fréquentiels lors du fonctionnement en émission ou en réception.
  4. Dispositif selon la revendication 1,
       caractérisé par le fait que, lors du fonctionnement en émission, le premier oscillateur à fréquence intermédiaire (5) est arrêté et le deuxième oscillateur à fréquence intermédiaire (11) est connecté, que, lors du fonctionnement en réception, le deuxième oscillateur à fréquence intermédiaire (11) est arrêté et le premier oscillateur à fréquence intermédiaire (5) est connecté, que le premier (5) et le deuxième (11) oscillateur à fréquence intermédiaire ont des domaines fréquentiels différents et que le dispositif détecteur de phase (7) est commuté, lors du fonctionnement en émission, sur le domaine fréquentiel du deuxième oscillateur à fréquence intermédiaire (11) et, lors du fonctionnement en réception, sur le domaine fréquentiel du premier oscillateur à fréquence intermédiaire (5).
  5. Dispositif selon l'une des revendications 1 à 4,
       caractérisé par le fait que le dispositif détecteur de phase (7) est constitué d'un détecteur de phase (21) et d'un diviseur de fréquence (22) qui est branché du côté amont et dont le rapport de division peut être commuté par l'intermédiaire du deuxième signal de commande de domaine (10).
  6. Dispositif selon l'une des revendications 1 à 5,
       caractérisé par le fait que le signal de fréquence porteuse est produit par un oscillateur commandable (20).
EP94104893A 1993-04-13 1994-03-28 Emetteur-récepteur pour haute-fréquences Expired - Lifetime EP0620656B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4312020 1993-04-13
DE4312020 1993-04-13

Publications (3)

Publication Number Publication Date
EP0620656A2 EP0620656A2 (fr) 1994-10-19
EP0620656A3 EP0620656A3 (fr) 1994-12-14
EP0620656B1 true EP0620656B1 (fr) 1999-07-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94104893A Expired - Lifetime EP0620656B1 (fr) 1993-04-13 1994-03-28 Emetteur-récepteur pour haute-fréquences

Country Status (3)

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US (1) US5566360A (fr)
EP (1) EP0620656B1 (fr)
DE (1) DE59408452D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08186519A (ja) * 1994-12-27 1996-07-16 Sony Corp 送受信回路

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1584623A (en) * 1920-04-23 1926-05-11 Westinghouse Electric & Mfg Co Switchboard
JPS51117510A (en) * 1975-04-07 1976-10-15 Shintou Denki Kk Double superheterodyne receiver
GB1584621A (en) * 1976-08-02 1981-02-18 Motorola Inc Multichannel communication device
JPS54139316A (en) * 1978-04-20 1979-10-29 Matsushita Electric Ind Co Ltd Am ssb transmitter/receiver
JPS5689136A (en) * 1979-12-21 1981-07-20 Toshiba Corp Transmitter-receiver of press-to-talk system
JPS58123642U (ja) * 1982-02-17 1983-08-23 株式会社ケンウッド トランシ−バ
JPS61294936A (ja) * 1985-06-21 1986-12-25 Nec Corp シンセサイザ−
FI81933C (fi) * 1989-05-18 1990-12-10 Nokia Mobira Oy Foerfarande foer alstring av frekvenser i en digital radiotelefon.
JPH04160926A (ja) * 1990-10-25 1992-06-04 Sony Corp 送受信装置
JP2850160B2 (ja) * 1991-01-25 1999-01-27 松下電器産業株式会社 時分割複信無線送受信装置
KR940007469B1 (ko) * 1991-05-23 1994-08-18 삼성전자 주식회사 이동 무선전화기에 있어서 주파수 소스회로
JP2998296B2 (ja) * 1991-05-31 2000-01-11 日本電気株式会社 ディジタル無線通信装置
FI91819C (fi) * 1991-11-05 1994-08-10 Nokia Mobile Phones Ltd Menetelmä kahden eri taajuusalueella toimivan digitaalisen radiopuhelimen taajuuksien muodostamiseksi
US5390363A (en) * 1993-04-30 1995-02-14 Motorola, Inc. Transmitter and receiver circuit and method therefor

Also Published As

Publication number Publication date
US5566360A (en) 1996-10-15
EP0620656A2 (fr) 1994-10-19
DE59408452D1 (de) 1999-08-12
EP0620656A3 (fr) 1994-12-14

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